This first part is a dupe - or at least, a run-through of the same level that the other Kaizo Mario World video showed. But still, I wanted to see more levels from this sadistic mess of a mario game - and i'm glad part 2 gave me the chance.
Holy Hell.
That said, anyone know where i can get a version of this?
The video is a different recording of the same game. The multiplicity hack is actually a patch to the movie recorder in the emulator, which records the entire play history (including rewinds), rather than just the final successful run. It doesn't look like this when you're actually playing the game.
If you go to the YouTube page you can see how the person did it.